From 93432440373ac580d8115643dee8452aee64ba41 Mon Sep 17 00:00:00 2001
From: CJ van den Berg <cj@vdbonline.com>
Date: Mon, 1 Apr 2024 20:56:58 +0200
Subject: [PATCH] fix: crash on forward with empty location_history

---
 src/location_history.zig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/location_history.zig b/src/location_history.zig
index f492cf1..6a90240 100644
--- a/src/location_history.zig
+++ b/src/location_history.zig
@@ -119,8 +119,8 @@ const Process = struct {
 
     fn forward(self: *Process, from: tp.pid_ref, cb_addr: usize) void {
         const cb: *CallBack = if (cb_addr == 0) return else @ptrFromInt(cb_addr);
-        if (self.pos == self.records.items.len - 1)
-            return;
+        if (self.records.items.len == 0) return;
+        if (self.pos == self.records.items.len - 1) return;
         self.pos += 1;
         const entry = self.records.items[self.pos];
         cb(from, entry.cursor, entry.selection);